Lead acetate (PbAc2)-derived and chloride-doped MAPbI3 solar cells with high fill factor resulting from optimized charge transport and trap state properties

Matondo, Jadel Tsiba; Malouangou, Maurice Davy; Wu, Jiawei; Bai, Liang; Yang, Yifan; Zhang, Yujing; Pan, Jia Hong; Mbumba, Manala Tabu; Akram, Muhammad Waleed; Guli, Mina

doi:10.1016/j.solener.2021.09.010

Cited by 10 publications

(5 citation statements)

References 52 publications

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“…As described above, the PV performances of PSCs were improved by the introduction of TiO 2 NRs. In particular, a significant increase in V OC and FF, which have been reported to be greatly affected by charge recombination occurring in PSC devices, − was observed. To investigate the reason, we applied various measurement tools to the PSC-NP46, PSC-NR110, and PSC-NR150 devices.…”

Section: Resultsmentioning

confidence: 91%

Selective Control of Novel TiO₂ Nanorods: Excellent Building Blocks for the Electron Transport Layer of Mesoscopic Perovskite Solar Cells

Park

Jeon

Yang

et al. 2023

ACS Appl. Mater. Interfaces

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Novel TiO2 nanorods (NRs) with various lengths of 70–200 nm and uniform widths of 46–48 nm are selectively synthesized by a solvothermal reaction under a basic environment. The length of TiO2 NRs is reproducibly tuned by varying the concentration of tetramethylammonium hydroxide (TMAH), while the NRs in the pure anatase phase are grown in the [001] direction, caused by the preferential binding affinity of TMAH to the TiO2 (101) facet. TiO2 NRs of various lengths are then applied to form the electron transporting layer (ETL) of mesoscopic perovskite solar cells (PSCs). We found that PSC devices with NRs exhibit superior photovoltaic (PV) performance to those with conventional 46 nm-sized TiO2 nanoparticles (NP46). Particularly, the PSC with TiO2 NRs of 110 nm length (NR110) exhibits the optimum PV conversion efficiency (PCE): the average PCE is 22.64% with a V OC of 1.137 V, a J SC of 24.60 mA·cm–2, and a FF of 80.96%, while the champion PCE is 23.18%. In addition, the PSC with NR110 (PSC-NR110) reveals significantly improved long-term stability in air with a relative humidity of 40–50%. In 1000 h, its PCE is reduced by only 9% whereas that of PSC with NP46 decreases by 25%. The PSC properties analyzed by impedance spectroscopy and J–V curve measurements under dark conditions and at various light intensities provide evidence that PSC-NR110 has fewer defects and shows significantly reduced charge recombination. We discuss the advantages of NR structures in preparing the ETL of PSC devices and also explain why the charge recombination is suppressed.

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Section: Resultsmentioning

confidence: 91%

Selective Control of Novel TiO₂ Nanorods: Excellent Building Blocks for the Electron Transport Layer of Mesoscopic Perovskite Solar Cells

Park

Jeon

Yang

et al. 2023

ACS Appl. Mater. Interfaces

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“…The Cl − could promote the growth of large crystal grains as extensively reported in previous studies. [ 40–43 ] Cl is subsequently eliminated as FACl byproduct in case of BACl and PACl following the mechanism proposed by Prockowsky and co‐workers, who demonstrated that Cl from CsCl additive in FA‐based perovskites is lost as FACl during annealing. [ 26 ] Meanwhile, the organic cations help the formed grains adopt the preferential (100) direction, as illustrated in Figure 3f.…”

Section: Resultsmentioning

confidence: 97%

Effect of Organic Chloride Additives on the Photovoltaic Performance of MA‐Free Cs_0.1FA_0.9PbI₃ Perovskite Solar Cells

et al. 2022

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The use of chloride additives to achieve high performance in perovskite solar cells (PSCs) is extensively reported in perovskite research. However, few studies are dedicated to understanding and comparing the underlying effects of ammonium cations in organic chloride additives. Herein, the effect of ACl additives (A: ethylammonium [EA], propylammonium [PA], butylammonium [BA]), with increasing ammonium size, on the performance of MA‐free Cs0.1FA0.9PbI3 PSCs is investigated. The obtained results indicate that Cl promotes the growth of large grains, while organic cations facilitate grain favorable orientation. Moreover, it is observed that EACl evaporates during thermal annealing despite the similar ionic size of EA to that of FA, which would lead to A‐site incorporation. However, PACl and BACl remain in final films, passivating grain boundaries. Moreover, by using double BACl–EACl additive, the films show considerably increased grain dimensions, passivated grain boundaries, and longer carrier lifetime. As a result, planar PSCs based on engineered Cs0.1FA0.9PbI3 layers achieve higher power conversion efficiency of 20.98%, 20.07%, 19.64%, and 19.03% for BACl–EACl, BACl, PACl, and EACl, respectively, compared to 17.58%‐efficiency for control PSCs. Moreover, this additive‐based approach also increases moisture resistance of the Cs0.1FA0.9PbI3 films, which consequently enhances the device ambient stability.

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“…[19] A valuable suggestion from this study is that ink engineering with additives combined with interfacial modification is critical to achieving higher FF, as such a double strategy would improve charge transport and extraction from the perovskite layer. [169,170]…”

Section: Performance Analysis Of Psms With Slot-die Coated Perovskite...mentioning

confidence: 99%

Slot‐Die Coating for Scalable Fabrication of Perovskite Solar Cells and Modules

Matondo,

Hu,

Ding

et al. 2024

Adv Materials Technologies

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Solution‐coating processes are promising methods to form active layers with low‐cost input in the industrial development of perovskite solar devices. Among available coating processes, of particular interest are those capable of producing uniform coatings with small defect distribution over large areas at high speeds, referred to as scalable methods. Slot‐die coating is one of these methods. It involves the meniscus coating of liquids or solutions over a static or moving substrate. This review discusses recent advances in slot‐die coating of active layers used in perovskite solar cells (PSCs) and modules (PSMs). Various strategies to control ink spreading over substrates, wet film drying, and post‐coating crystallization of light‐absorbing perovskite layer are outlined along with different approaches and materials used in post‐deposition defects healing. Then, commonly used solvents for perovskite ink formulation are analyzed based on their specific rheology and potential effect on human health and equipment safety. Also, precursor materials, solvents, and strategies to obtain desirable properties and morphology in the slot‐die coating of charge‐transporting layers are discussed. Lastly, an analysis of the performance of slot‐die coated perovskite solar mini‐modules and future perspectives on this topic conclude this review.

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Lead acetate (PbAc2)-derived and chloride-doped MAPbI3 solar cells with high fill factor resulting from optimized charge transport and trap state properties

Cited by 10 publications

References 52 publications

Selective Control of Novel TiO₂ Nanorods: Excellent Building Blocks for the Electron Transport Layer of Mesoscopic Perovskite Solar Cells

Selective Control of Novel TiO₂ Nanorods: Excellent Building Blocks for the Electron Transport Layer of Mesoscopic Perovskite Solar Cells

Effect of Organic Chloride Additives on the Photovoltaic Performance of MA‐Free Cs_0.1FA_0.9PbI₃ Perovskite Solar Cells

Slot‐Die Coating for Scalable Fabrication of Perovskite Solar Cells and Modules

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Lead acetate (PbAc2)-derived and chloride-doped MAPbI3 solar cells with high fill factor resulting from optimized charge transport and trap state properties

Cited by 10 publications

References 52 publications

Selective Control of Novel TiO2 Nanorods: Excellent Building Blocks for the Electron Transport Layer of Mesoscopic Perovskite Solar Cells

Selective Control of Novel TiO2 Nanorods: Excellent Building Blocks for the Electron Transport Layer of Mesoscopic Perovskite Solar Cells

Effect of Organic Chloride Additives on the Photovoltaic Performance of MA‐Free Cs0.1FA0.9PbI3 Perovskite Solar Cells

Slot‐Die Coating for Scalable Fabrication of Perovskite Solar Cells and Modules

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Product

Resources

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Selective Control of Novel TiO₂ Nanorods: Excellent Building Blocks for the Electron Transport Layer of Mesoscopic Perovskite Solar Cells

Selective Control of Novel TiO₂ Nanorods: Excellent Building Blocks for the Electron Transport Layer of Mesoscopic Perovskite Solar Cells

Effect of Organic Chloride Additives on the Photovoltaic Performance of MA‐Free Cs_0.1FA_0.9PbI₃ Perovskite Solar Cells